A Risk Minimization Framework for Information RetrievalA Risk Minimization Framework for Information Retrieval ChengXiang Zhai a John Lafferty b aDepartment of Computer Science University of Illinois at Urbana-Champaign bSchool of Computer Science Carnegie Mellon University Abstract This paper presents a probabilistic information retrieval framework in which the retrieval problem is formally treated as a statistical decision problem. In this framewor
